Morning glory looks delicate, almost romantic, until it swallows a fence line or chokes out a prized shrub. That mix of pretty flower and relentless vine is exactly what makes it such a headache for gardeners. The right herbicide turns a season-long battle into a manageable weekend project. Below are eight options worth knowing, each suited to a different lawn, garden, or edge-of-property scenario.
A Quick View Of The Lineup
Hi-Yield (35262) Triclopyr Ester, 16 oz
Hi-Yield (35261) Triclopyr Ester, 8 oz
Hi-Yield (33693) Super Concentrate Killzall, 1 gal
Hi-Yield (22742) Herbicide Granules Preventer, 4 lbs
Hi-Yield (21416) 2,4-D Selective Weed Killer, 1 gal
Bonide Chickweed, Clover & Oxalis Killer, 128 oz
Roundup Dual Action 365, 1.33 gal.
Southern AG 01113 Brush Weed Killer, 32 oz
A Breakdown Of The Leading Choices
Triclopyr is a broadleaf-specific herbicide, meaning it targets weeds like morning glory without wiping out the surrounding grass when applied correctly. This 16 oz liquid concentrate from Hi-Yield is sized for homeowners who need enough material to handle a recurring vine problem across a typical suburban lot, not just a single sprig near the mailbox.
The label covers actively growing broadleaf weeds and allows use on perennial bluegrass, perennial ryegrass, and tall fescue ornamental turf, which describes most cool-season lawns in the northern half of the country. You mix it with water and spray it onto the foliage, so a basic pump sprayer is part of the workflow.
The Value In It
- Targets broadleaf weeds without disturbing listed cool-season turfgrasses.
- Liquid concentrate stretches further per bottle than ready-to-use sprays.
- Works on tough perennial vines that resist hand-pulling.
- Useful as a bluegrass suppressor in ornamental settings.
Things To Consider
- Cannot be used on Bahiagrass, Bentgrass, Bermudagrass, Centipedegrass, St. Augustine, or Zoysiagrass.
- Requires a separate sprayer and basic mixing discipline.
- Storage in a cool, locked space matters because of its concentration level.
Built With In Mind
Homeowners with cool-season lawns who want a targeted, mix-it-yourself approach to persistent morning glory patches.
Look Elsewhere When
You’d rather skip measuring and mixing, in which case the Bonide Chickweed, Clover & Oxalis Killer offers a no-prep ready-to-spray alternative.
The smaller sibling of Item 1, this 8 oz triclopyr bottle covers the same broadleaf weed spectrum, including Oxalis and Wild Violet, just in a more apartment-friendly volume. For someone trying morning glory control for the first time, committing to a smaller concentrate reduces both cost and storage pressure.
You can apply it on perennial bluegrass, perennial ryegrass, and tall fescue turf, and it doubles as a bluegrass suppressor where that’s a goal. For a single fence corner or a stubborn vine along a walkway, 8 oz often gets the job done without leftover concentrate sitting in the garage for years.
Well-Handled Touches
- Same active ingredient as the larger 16 oz bottle at half the volume.
- Lower upfront commitment for first-time users.
- Compact size stores easily on a shelf or in a small shed.
Points To Note
- Same grass restrictions as Item 1, so warm-season lawns are off the table.
- You may run out mid-season on a serious, yard-wide infestation.
- Still requires mixing, so it isn’t grab-and-spray.
The Right Fit
First-time sprayers and small-yard owners who want to test triclopyr without buying a full-size jug.
Swap It Out When
You face a large lot with vines everywhere, in which case the Hi-Yield (33693) Super Concentrate Killzall covers more ground in fewer refills.
This is the total vegetation killer, not a selective herbicide. Killzall is built for fence rows, gravel driveways, barn lots, and any place where you genuinely want everything brown for a while. A 1 gal jug treats a substantial footprint when diluted per label, which is the whole point of buying concentrate at this scale.
Because it kills grass along with broadleaf weeds, this isn’t the right tool for an established lawn. Morning glory climbing a chain-link fence or smothering a woodpile, though, is exactly the scenario where a non-selective concentrate earns its keep.
Practical Advantages
- Tackles grass, broadleaf weeds, and woody brush in one pass.
- One gallon handles large non-lawn areas in a single mixing session.
- Dries on plant surfaces quickly thanks to its double-surfactant formulation.
Honest Caveats
- Not for use on lawns, since it kills desirable turf along with weeds.
- Drift onto wanted plants is a real risk on windy days.
- Requires careful rinsing of sprayers to avoid contaminating other applications.
Made For
Property owners clearing fence lines, gravel areas, or other non-lawn zones where total vegetation control is the goal.
A Better Fit Elsewhere
You need to keep surrounding grass alive, in which case the Hi-Yield (35262) Triclopyr Ester 16 oz offers selective broadleaf control.
Granular herbicides work before weeds appear, which makes this 4 lb jug a different kind of tool. Instead of spraying vines you can already see, you spread these granules early in the season to stop morning glory seedlings from establishing in the first place. That’s a different mental model than the spray cans most people keep on the shelf.
For flower beds, vegetable gardens, or freshly mulched borders where you want a full-season weed barrier, the granule format spreads evenly with a hand spreader. The label lists Bluegrass, Barnyard, Crabgrass, and a longer list of additional species, which makes it useful for general weed prevention, not just one specific vine.
Useful Touches
- Prevents weed and grass growth all season where applied.
- Granule format skips the mixing and pump-sprayer learning curve.
- Hand-spreader compatible for even application in tight garden beds.
- Cuts down on summer weeding time across an entire growing season.
Worth Bearing In Mind
- Works on prevention, not on existing mature vines already climbing.
- Timing matters: application at the start of the growing season is essential.
Best Suited To
Organized gardeners who plan ahead and want to keep new morning glory seedlings from ever taking hold in beds and borders.
Reach For A Different Pick When
The vines are already established and climbing, in which case a foliar spray like the Hi-Yield (35262) Triclopyr Ester tackles what you can see.
2,4-D is the broadleaf herbicide chemistry that agriculture has leaned on for decades, and this gallon concentrate puts that same tool in a homeowner-friendly jug. The label calls out Dandelion, Arrowhead, Buckhorn, Aster, Goatsbeard, and a longer list of broadleaf species, so it fits comfortably in any lawn-care routine aimed at mixed weed pressure.
Use sites include lawns, ponds, drainage ditches, pastures, and rangelands, which makes this the right pick for someone managing acreage rather than a small city yard. Pairing it with a surfactant like the Hi-Yield Spreader Sticker (31063) is the suggested path if you want better leaf coverage and absorption.
Notable Upsides
- Proven selective chemistry for broadleaf weeds including tougher perennial vines.
- Approved for lawns, pastures, ponds, and drainage ditches alike.
- Pairs well with a spreader-sticker surfactant for heavier coverage.
- One gallon covers meaningful ground across larger properties.
Small Caveats
- Not suited for every turfgrass type, so label-checking matters.
- Concentrate format requires sprayer setup and proper protective gear.
Who Should Grab It
Rural and suburban property owners with pasture, rangeland, or large mixed-use lawns where broadleaf weeds are a recurring issue.
Where Another Pick Suits Better
You mostly need a small spot treatment along a sidewalk, in which case the smaller Hi-Yield (35261) Triclopyr Ester 8 oz keeps the volume manageable.
For anyone who flinches at the word “concentrate,” Bonide’s 128 oz ready-to-use spray removes the mixing step entirely. You hook up the bottle, point, and spray, which lowers the barrier to actually treating a vine the moment you notice it. That convenience alone is the defining feature.
The formula is designed for residential turf and tackles chickweed, clover, dandelions, ground ivy, oxalis, wild violet, and over a hundred other tough species. Systemic action means it works down to the roots rather than just burning visible leaves, which is what you want when morning glory keeps resprouting from underground runners.
Strengths Worth Knowing
- No measuring or mixing required.
- Targets a broad list of stubborn broadleaf weeds in one formula.
- Designed to spare lawn grass while killing listed weeds at the root.
- Sprayer bottle doubles as the storage container.
Room For Improvement
- Heavier to carry than a small concentrate bottle, so refills require trips back to the spigot.
- Higher cost per treated area than diluted concentrate products.
Who Will Love This
First-time herbicide users and casual homeowners who want grab-and-spray simplicity without buying a separate pump sprayer.
Consider Something Else When
You’re treating acreage or want better cost efficiency per square foot, in which case the Hi-Yield (21416) 2,4-D Selective Weed Killer concentrate is the stronger value play.
Roundup’s Dual Action 365 is built around a two-step idea: kill what’s growing now, then keep it from coming back for up to a year. The 1.33 gal jug pairs with the Pump ‘N Go 2 sprayer, so it’s still a grab-and-go experience despite the larger volume. That combination targets tough weeds and grasses like clover, dandelion, crabgrass, poison ivy, and other broadleaf and grassy invaders.
The 12-month prevention layer is the differentiator. For a gravel driveway, a patio edge, or a strip along a fence where you want a full year of bare ground, this single product replaces both a kill spray and a separate pre-emergent. Rainfall timing matters because the formula becomes rainproof relatively quickly after application.
Where It Delivers
- One-step kill-plus-prevent approach cuts down on repeat applications.
- Tough-weed list includes vines, brush, and grassy invaders.
- Pump ‘N Go 2 sprayer removes the need for a separate pump sprayer.
- Long residual window suits low-maintenance hardscape edges.
Practical Considerations
- Not designed for use on lawns or desirable plantings.
- Higher per-jug cost than single-action concentrates.
- Empty container is bulky and needs proper disposal planning.
Whose Shelf It Belongs On
Homeowners who want long-term bare-ground control along fences, driveways, and patios without re-spraying every few weeks.
Skip It When
You want to keep lawn grass alive in the treatment zone, since the Hi-Yield (35262) Triclopyr Ester is a selective broadleaf alternative.
Vines climbing into trees and smothering fence lines are a different category of problem, and Southern AG’s Brush Weed Killer is aimed straight at that. With 8.8% triclopyr as the active ingredient, this quart bottle is the heavy hitter for brush, vines, and even stump sprouting, which makes it relevant when morning glory has wrapped itself around something you want to save.
Labeled for non-crop areas like road right-of-ways, rangeland, pastures, and fence rows, this is more of a rural-property product than a suburban lawn-care product. The simple mixing instructions and the option to use it as a foliar spray at a few ounces per gallon keep the workflow approachable.
A Few Highlights
- Brush-and-vine specialist for woody and twining growth.
- Same active chemistry as commercial brush-control products.
- Doubles as a stump treatment to prevent resprouting.
- Quart bottle size fits standard pump sprayers.
Things To Weigh
- Not approved for residential lawns or near desirable ornamentals.
- Requires careful spot application to protect nearby plants from drift.
Perfect Match For
Landowners dealing with morning glory vines climbing trees or taking over pasture edges and fence rows where selective chemistry won’t reach.
Where A Sibling Pick Shines
You need selective control inside a maintained lawn, where the Bonide Chickweed, Clover & Oxalis Killer is the safer residential choice.
What To Know Before Picking A Morning Glory Treatment
Morning glory earns its name because the flowers open in the morning, but the vines themselves are in a tough-to-kill family that includes bindweed. Treating the foliage alone often fails because the root system stores enough energy to send up new shoots within weeks. The products on this list fall into two broad camps: selective herbicides that spare listed turfgrasses, and non-selective options meant for spots where everything is going brown on purpose.
Cool-season lawns like fescue and ryegrass tolerate triclopyr-based products, while warm-season grasses such as St. Augustine and Bermuda usually do not. That single fact rules out whole categories of products for southern lawns and explains why some labels include long “do not apply to” lists.
Timing changes everything too. Pre-emergent granules stop seedlings before they break soil, while foliar sprays work on actively growing vines. A season-long plan often pairs a spring pre-emergent with a mid-summer foliar follow-up on whatever escaped, which is far more effective than a single spray and forget session.
Key Considerations Across These Picks
Pitfalls Shoppers Hit
Choosing the cheapest jug without checking the grass list on the label is the most common miss, since a product that’s perfect for a fescue lawn can wipe out a St. Augustine yard in a single pass. Treating in the wrong weather is the next mistake: spraying during windy conditions spreads herbicide onto desirable plants, and spraying right before rain washes the active ingredient off before it absorbs.
What The Higher Tier Buys
The premium options like Roundup Dual Action 365 combine a foliar kill with a season-long pre-emergent barrier, replacing two separate products and two separate trips to the garden center. For large areas, that time savings and the longer residual window justify the higher cost per jug compared to a basic concentrate.
Frequently Asked Questions
How long does it take for morning glory herbicides to work? Foliar sprays typically begin damaging visible foliage within days, but root-kill and full plant death can take two to three weeks depending on weather and growth stage.
Can I use these products near vegetable gardens? Selective broadleaf herbicides can drift onto desirable plants, so application near food gardens requires shielding or targeted spot treatment rather than broadcast spraying.
Why are some products labeled “do not use on lawns”? Non-selective herbicides like Killzall and Dual Action 365 kill grass along with weeds, so they’re restricted to fence rows, driveways, and other spots where total vegetation control is the goal.
Is a pre-emergent enough on its own? Pre-emergent granules only stop new seedlings, so established morning glory vines with deep root systems will still need a foliar spray treatment to die back.
How often should I reapply? Foliar sprays usually need a follow-up in three to four weeks for regrowth, while pre-emergent granules typically hold for a full growing season when applied at the start.
Wrap Up
Tackling morning glory comes down to matching the herbicide to the setting: selective sprays for lawns, brush killers for fence lines, and granules for prevention in beds. Once you know which camp your situation falls into, the rest of the decision is just picking the volume and format that match the scale of the job in front of you.
